Wall connection

ABSTRACT

The invention relates to a wall connection for connecting a fitting (2) to a water network, with a connecting piece (3) having on the wall side a connection part (4) with an inlet duct (6), and on the fitting side a connection part (5) with an outlet duct (7). The inlet duct (6) and the outlet duct (7) are preferably excentrically staggered with regard to each other. In order to make a wall connection available for the connection of the fitting to the water network, in which the connection between the wall connection and the fitting takes up as little place as possible and is at the same time simple to produce, the invention provides that a flange (9) with tapped holes (12, 13) is provided for connecting the wall connection (1) to the fitting (2) by means of fastening screws (10, 11).

The invention relates to a wall supply for connection of a fitting to awater system, with a wall supply piece which has a wall-side supply partwith an inlet channel and a fitting-side supply part with an outletchannel, the inlet channel and the outlet channel preferably beingarranged eccentrically offset to one another.

Wall supplies are used to connect the hot and cold water installationlines of the water system to a fitting. Conventionally the inlet channeland the outlet channel in the wall supply piece are arranged axiallyparallel eccentrically offset to one another. In practice these wallsupplies are therefore called "S-supplies". The eccentric arrangement ofthe inlet and outlet channel can balance inaccuracies in the distance ofthe supplies of the hot and cold water installation lines provided inthe installation wall when mounting the fitting. By turning thepertinent wall supply pieces it is possible to mount the fitting exactlywhen the distance of the supplies of the installation lines deviatessomewhat from the setpoint.

A water supply of the aforementioned type is already known from DE-U-6751 160 and both on its wall side and also on its fitting-side supplypart it has an outside thread for connection to the supplies of theinstallation lines or the fitting. Corresponding to the outside threadon the fitting-side supply part of the wall supply piece there is aunion nut with an inside thread on the fitting on the hot and cold waterdelivery. The known screw connection between the wall supply and thefitting takes up a comparatively large amount of space as a result ofthe respective union nuts on the hot and cold water delivery so that afitting which has been connected via a known wall supply projectsaccordingly away from the installation wall.

The object of this invention is to make available a wall supply forconnection of a fitting to a water system, the connection between thewall supply and the fitting taking up as little space as possible and atthe same time it can be easily produced.

This object is achieved as claimed in the invention in a wall supply ofthe initially mentioned type in that there is a flange which hasthreaded holes for connection of the wall supply to the fitting viamounting screws. Based on the aforementioned flange connection it is nowpossible for the connection between the wall supply and the fittingproceeding from the installation wall to have only a very smallextension. This is especially advantageous if a fitting is to be madeavailable which proceeding from the installation wall has only a verysmall construction depth. In addition to the small attainableconstruction depth of a fitting which has been connected via a wallsupply as claimed in the invention, the flange connection moreoveroffers the advantage that it can be produced very easily, since to do soonly two mounting screws need be screwed in.

Other features, advantages and possible applications of this inventionfollow from the dependent claims and the following description ofembodiments using the drawings and the drawings themselves.

FIG. 1 shows a side view, partially in cross section, of a wall supplyas claimed in the invention,

FIG. 2 shows one view of the wall supply from FIG. 1 in the direction ofthe arrow II from FIG. 1, but without the mounting screws,

FIG. 3 shows a side view of part of a fitting with a wall supply asclaimed in the invention,

FIG. 4 shows an overhead view of a fitting with two water supplies asclaimed in the invention, and

FIG. 5 shows a view of a fitting from FIG. 4 in the direction of thearrow V from FIG. 4.

The individual figures show a wall supply 1 for connection of a fitting2 to a water system which includes the hot and cold water installationlines which are not shown here and which end in the correspondingsupplies to which then the fitting 2 is connected via the wallsupplies 1. The wall supply 1 itself has a wall supply piece 3 which isprovided with a wall-side supply part 4 and a fitting-side supply part5. In the wall-side supply part 4 there is an inlet channel 6, while inthe fitting-side supply part 5 there is an outlet channel 7. The inletchannel 6 and the outlet channel 7 are arranged axially paralleleccentrically offset to one another and are interconnected via a throughchannel 8.

It is important at this point that the wall supply 1 in addition to thewall supply piece 3 has a flange 9 for connection to the fitting 2 viamounting screws 10, 11 which can be screwed into the correspondingthreaded holes 12, 13 of the flange 9. As follows from FIG. 2, theflange 9 on opposite sides has one flange projection 14, 15 each inwhich there is one threaded hole 12, 13 respectively. Of course therecan also be several flange projections. But to ensure a good connectionof the fitting 2 and the wall supply 1 and to achieve an appropriateseal between the fitting 2 and the wall supply 1 the two flangeprojections 14, 15 with one threaded hole 12, 13 each are sufficient.

Advantageously the flange 9 can be turned relative to the wall supplypiece 3. This means that the flange 9 is a separate component. In thisembodiment the flange 9 is a ring which can be placed over the wall-sidesupply part 4. But fundamentally it is also possible for the flange tobe made in one piece with the wall supply piece. The two-partconfiguration of the wall supply 1 with the flange 9 which can turnrelative to the wall supply piece 3 however has the advantage of easyinstallation. The flange 9 is turned if necessary to the respectiveinstallation site and the connection between the fitting 2 and the wallsupply 1 can then be established.

To be able to easily turn the flange 9 relative to the wall supply piece3, both the flange 9 and also the wall supply piece 3 in a commoncontact area have spherical contact surfaces 16, 17 with roughly thesame radius. These spherical contact surfaces 16, 17 between the flange9 and the wall supply piece 3 yield a type of ball joint by which notonly can the flange 9 move easily relative to the wall supply piece 3,but peripheral and flat transfer of force from the contact surface 17 ofthe flange 9 to the contact surface 16 of the wall supply piece 3 isgood.

In this embodiment the flange 9 is located in the area of thefitting-side supply part 5 of the wall supply piece 3, specifically atthe transition of the wall-side supply part 4 to the fitting-side supplypart 5. This need not necessarily be the case, but with respect to therotary arrangement of the flange 9 relative to the wall supply piece 3it is a good idea since the peripheral contact surface 16 can be easilyplaced or formed in the transition area of the supply parts 4 and 5.

The back 18 of the flange 9 is essentially even. This has the advantagethat the flange 9 can be screwed flat to the surface of the installationwall which is not shown here or of a tile of the installation wall. Itis not shown that the flange on the wall supply piece can also becaptively secured. In this case the wall supply composed of the flangeand the wall supply piece then represents a unit, and the flange cannotbe lost in spite of a their being separate.

On the fitting-side wall supply part 5 of the wall supply piece 3 thereis a sexagon 19. Instead of the sexagon 19 there could of course beanother tool engagement area. Via the sexagon 19 which is made in onepiece with the wall supply piece 3 a screw connection between the wallsupply 1 and the respective supplies of the hot and cold waterinstallation lines which are not shown here can be easily established orbroken. For this screw connection the wall-side supply part 4 in theconventional manner has an outside thread 20 for connection to thesupply of the pertinent installation line, the supply not being shown.

While the wall-side supply part 4 is provided with an outside thread 20for connection to the water system via the corresponding supplies, thefitting-side supply part 5 has a spherical head 21 for insertion into acorresponding receiver 22 of the fitting 2. In the installation statewhich is shown among others in FIG. 3 there is the spherical head 21 inthe corresponding receiver 22 of the fitting 2 and seals there. For thisreason in the area of the spherical head 21 there is a sealing element23 in the form of an O-ring. The sealing element 23 is located in aperipheral groove 24 in the spherical head 21.

There is a nonreturn valve 25 here in the outlet channel 7. Thenonreturn valve 25 on the outside in a peripheral groove 26 has asealing element 27 while it is held securely in the outlet channel 7 viaa locking ring 28. It goes without saying that the nonreturn valve couldbasically also be located in the inlet channel. Otherwise, instead ofthe nonreturn valve or in addition to it there can also be a dampinginsert for reducing noise in the outlet channel.

FIGS. 4 and 5 each show at least one part of the fitting 2 which isconnected to the wall supplies 1. The fitting 2 has a fitting body 29which is provided with a hot water delivery 30 and a cold water delivery31. On the supply-side end of the hot water delivery 30 and thecold-water delivery 31 there is one connecting flange 32, 33 each,respectively. The connecting flanges 32, 33 are made in one piece withthe fitting body 29. This is not however absolutely necessary. Aconfiguration which can turn relative to the fitting body is alsopossible. In this case it is then not inherently necessary for theflange of the wall supply to be made as a separate part.

Each of the connecting flanges 32, 33 has two flange projections 34, 35in which there is one hole 36 each. The holes 36 of each connectingflange 32, 33 are located on opposite sides and correspond to thethreaded holes 12, 13 in the flanges 9 of the wall supplies 1. As isapparent from a comparison of FIGS. 4 and 5, the fitting 2 can be easilyconnected to the wall supplies 1 via the mounting screws 10, 11 via theconnecting flanges 32, 33 of the fitting body 29 and the flanges 9 ofthe wall supplies 1. The embodiment of the wall supply 1 as claimed inthe invention makes it possible for the wall supplies 1, i.e. the wallsupply pieces 3 and also the flanges 9 for hot water delivery 30 andcold water delivery 31 to be made identical.

As follows from FIG. 4, between the projections 34 and the flange 9there is one intermediate space each. The latter is bridged via a spacer37 which in this embodiment is made in one piece with the projection 34.The same applies otherwise to the projection 35. FIG. 5 shows that thetwo projection 35 each have another hole 38. The holes 38 are usedpreferably for attaching other components of the fitting 2.

What is claimed is:
 1. Wall supply for connection of a fitting (2) to awater system, with a wall supply piece (3) which has a wall-side supplypart (4) with an inlet channel (6) and a fitting-side supply part (5)with an outlet channel (7), the inlet channel (6) and the outlet channel(7) being arranged offset to one another, and there being a flange (9)which has threaded holes (12, 13) and which can turn relative to thewall supply piece (3) for connection of the fitting (2) to the wallsupply (1) via mounting screws (10, 11), characterized in that the wallsupply piece (3) and the flange (9) each have spherical contact surfaces(16, 17) in a common contact area.
 2. Wall supply as claimed in claim 1,wherein the inlet channel (6) and the outlet channel (7) are arrangedeccentrically offset to one another.
 3. Wall supply as claimed in claim1, wherein the flange (9) is located in the area of the fitting-sidesupply part (5), preferably in the area of the transition from thewall-side supply part (4) to the fitting-side supply part (5).
 4. Wallsupply as claimed in claim 1, wherein the back (18) of the flange (9)facing the installation wall is essentially flat.
 5. Wall supply asclaimed in claim 1, wherein the flange is captively secured on the wallsupply piece.
 6. Wall supply as claimed in claim 1, wherein on thewall-side supply part (4) there is an outside thread (20) for connectionto the water system and preferably in the area of the fitting-sidesupply part (5) there is a tool engagement area, especially in the formof a sexagon (19).
 7. Wall supply as claimed in claim 1, wherein thefitting-side supply part (5) has a spherical head (21) for insertioninto a corresponding receiver (22) of the fitting (2) and preferablythere is at least one sealing element in the area of the spherical head(21).
 8. Wall supply as claimed in claim 1, wherein there is a nonreturnvalve (25) in the inlet channel or in the outlet channel (7) andpreferably there is a damping element in the outlet channel.
 9. Fittingwith a fitting body (29) which has a hot water delivery (30) and a coldwater delivery (31), on the supply-side end of the hot water delivery(30) and of the cold-water delivery (31) there being one connectingflange (32, 33) each, respectively, for connection to one wall supply(1) at a time as claimed in claim 1 via mounting screws (10, 11). 10.Fitting as claimed in claim 9, wherein the flanges (9) of the wallsupplies (1) for connection to the connecting flanges (32, 33) of thehot water delivery (30) and of the cold-water delivery (31) arestructurally identical.
 11. Wall supply as claimed in claim 2, whereinthe flange (9) is located in the area of the fitting-side supply part(5), preferably in the area of the transition from the wall-side supplypart (4) to the fitting-side supply part (5).
 12. Wall supply as claimedin claim 3, wherein the back (18) of the flange (9) facing theinstallation wall is essentially flat.
 13. Wall supply as claimed inclaim 4, wherein the flanges is captively secured on the wall supplypiece.
 14. Wall supply as claimed in claim 5, wherein on the wall-sidesupply part (4) there is an outside thread (20) for connection to thewater system and preferably in the area of the fitting-side supply part(5) there is a tool engagement area, especially in the form of a sexagon(19).
 15. Wall supply as claimed in claim 6, wherein the fitting-sidesupply part (5) has a spherical head (21) for insertion into acorresponding receiver (22) of the fitting (2) and preferably there isat least one sealing element in the area of the spherical head (21). 16.Wall supply as claimed in claim 7, wherein there is a nonreturn valve(25) in the inlet channel or in the outlet channel (7) and preferablythere is a damping element in the outlet channel.
 17. Fitting with afitting body (29) which has a hot water delivery (30) and a cold waterdelivery (31), on the supply-side end of the hot water delivery (30) andof the cold-water delivery (31) there being one connecting flange (32,33) each, respectively, for connection to one wall supply (1) at a timeas claimed in claim 8 via mounting screws (10, 11).